Valve structure



H. C. CUSKIE VALVE STRUCTURE Sept. s, 1949.

Filed Dec. 29, 1944 Pstentedsepi. 6,1949

UNITED sTATEs PATENT oFF-ics 2,481,088 VALVE STRUCTURE C. Cuskie, Rolla www, man poration of Delaware Mo., sul or to Chmand Parhnhllleh., a oor- Allplltion December 29. 1944, Serial No. 570.308 2 Chime. (Cl. 251- 140 also it is easier to clean.

an improved valve structure. More so will be capable of two-way operation at dlil'erent pressures.

Another object is to provide improvements and mpliication in a valve construction which facilitate cleaning and other care.

Other objects will appear from the disclosure. In the drawings: Fig. 1 is a longitudinal sectional view through Fig. 2 is a sectienai view taken n the une z of Fig. I

Illllg. 3 is a sectional view taken on the line 3 3 o Fig. 1;

Fig. 4 is a sectional view taken on the line 4 4 ot Fig. 3: and i Fig. 5 is a sectional view taken on the line 5 3 of Fig. 3.

The reference character l Il designates the shock absorber of the present invention, which includes 2 The upper end or the sleeve Il receives a bushing ill in a threaded connection.

Il, as seen in Fis. 5, serving to maintain the cover part 28 against excessive lateral movement in the passage in the body Il. A

in engagementv with the inner periphery oi' the one disk 21. A flange 33, from the valve body 24, holds the ring 3| ln place. The body 24 has a plurality oi side openings 34. A plate 35 is secured 1n the base ot the body 2| and supports in threaded engagement a threaded adjustable stop 3B. having an upper end adapted to be engaged by the cover part 28 in its downadapted to receive a screw driver for adjustment of the stop 38.

The piston rod il is attached to a piston Il.

threaded within the wall portion The ilanged below the piston le decreases, Thus there munt member 46 has one or more openings 41 and supbe an escape for fluid to accommodate the resultports in threaded engagement an adjustable ant decrease in volume. Conversely, as the piston threaded stop 4B having a slot Il* at one end, 38 goes up, there must be an inlet for fluid to adapted to receive a screw driver for adjustment accommodate the increase in volume due to the of the stop I8. The stop 4B is adapted to contact decrease in volume above the piston lll at a lower a cover part or inlet valve 49 having on one side rate than the increase oi. volume below the an annular bead 50 engageable with the one anpiston. The compression valve 23 provides the nular disk l5 adjacent ,its inner periphery and a inlet and outlet oi' the fluid, and the space beplurality of outwardly extending fingers 5l servl0 tween the tubular sleeves I9 and 2l constitutes ing to locate the cover part l! within the wall porthe reservoir for the extra fluid. As the piston tion l2 and to prevent excessive lateral movement. 3B moves down, the total volume ior duid above Resilient means formed of a stamped ring B2 and below the piston decreases, and escape for having opposed fingers 53 pressed out of the plane the iiuld is provided between the cover part 18 of the ring 52 act between the base oi the cup- 15 and the disks 21. This does not take place until shaped member 39 and the cover part 49 to mainthe pressure of the fluid has reached a considertain the bead lill of the cover I9 in engagement ablevalue. Downward pressure of the fluid causes with the one disk Il near its inner periphery. the inner peripheries or the disks 21 to deiorm The rings i2 and Il are to be suitably connected and move downwardly and the cover part 28 to parts. not shown. between which the shock 20 move downwardly with its annular bead in conabsorber IB is to operate. Fluid is located in tube tact with one disk 21 adjacent its inner periphery 2| between the piston 38 and the compression until the cover part 28 contacts the adjustable valve 2l. above the piston 81|, and in the reserve stop 36. Further downward movement of the chamber between tubes l0 and 2l. When the cover part 3| is prevented and further downward rings i2 and II move toward one another, the 2.-. movement of the inner peripheries of the annular piston 20 moves down in the tube or cylinder 2|. disks 21- causes the one disk to move out of en- The fluid tends to ilow upwardly through the gagement with the annular bead 29 on the disk 2B. piston 38. and this takes Place Without much Dres- Fluid may now escape downwardly between the sure. for the cover mrt or inlet valve 49 is easilyy cover part :a and the annular disks 21. when lifted o!! the annular disks II against the action 3U the piston 38 moves upwardly, iiuid pressure of the resilient fingers Il oi the ring 51. When against the valve 23 is upward and acts to litt the rings i2 and IB tend t0 move aww trom one the cover part 2B easily from the annular disks another. the pi'wn 33 tend! 15 mOV up in the 21. This happens at a relatively low pressure. cylinder 2 i Fluid tends to flow down through As is the case with valve construction in the piston the Piston. This causes the cover part 4s to move nr, sa, the valve 2s is seu-cleaning, because the plate down and the inner peripheries 0f the annular za is sassy moved upwardly from the disks 21 to disks 5 '60 move dWn The cover Part 9 eventpermit the removal oi dirt or other foreign matally contacts the adjustable stop 4B and-so further ter. downward movement oi the cover part is pre- The stops u and and s my be adjusted by vented. Further downward movement of the 'il' rotation to stop downward movement oi the lower inner perlpheres 0f me k l5 causes them t0 parts at difierent positions, and thus the presmove out o! contact with the annular bead on the sums at which gum wm escape by virtue of move- @Ver Daft o and so omo may now downwardly ment of the annular disks 21 or lo away from thrmlsh the Pim and the Pim may me the over parts :s or u win bc vai-ica. upwardly. The preesire at wilih the annular 4:, I claim:

disks o5 are oefom ownwo'r out of engage l. A valv com risin a cu -sh ed tru t re ment :mi the cover pormhlsonsioemblyrl including aebase sorting provied arith in Spnthan he pressure at w Y e cover pa i raised upw y from engagement with the ing therein, a body port on comprising a continu ous annular wall. and means forming a shoulder annular disks Il. `This makes the shock absorber 5o in the Wan at a region spaced from the base p0r l0 operate in the usual and desired manner; i. e.. tion, a resilient gat deformable element posh there is considerably greater resistono@ to move' tioned within the cup-shaped structure with its ment' of the ports away from one another be' periphery at the shoulder and comprising an antween which the shock absorber is connected than nular met margin movable with respect to the to movement of the parts toward one another. 55 periphery away from the base of the cup shaped This is accomplished by tho volvo construction structure under deformation oi the element and on the piston 3B, which involves the annular disks dennmg a valve opening a retainer mung m o and the cover port' o capable of twowoy threaded engagement with said wall for holding operation at different proosuros A vor? impor" the periphery oi the deformable element xedly tant feature o! this arrangement is that the valve co against the Shoulder. a member positioned M oonotmotion o sou'ooonmowho tho pressure tween the base portion of the cup-shaped strucis upward the cover Port o is any moved up ture and the deformable element, said member Woroly out of como with the disks L and oo covering the valve opening and having an annular om or foreign matter toom to oouoot at this rib engaging the annular inner margin of said region is-ooouy removed- 35 deformable element, said member being movable The compression valve 2l operates in much the away from the base portion of the cuphaped same fumo @o the Volvo oonstfuooon in the structure so as to remain in contact with the anpiston oo- First it' homo be explained that tho nular inner margin oi the deformable element compression valve and the reservoir between during the medew-med movement of said the tubes 'o and 2| o Provided so that there i5 70 inner margin, an adjustable threaded device havcompensation for the space occupledby the Piston ing a slot at one end for rotation by a tool and Nd I` AS the P15150 moves OWBWNY- the being mounted in the retainer so as to project smaller area above thepiston 3U due to the piston through the valve opening and having its other rod i1 makes the volume for fluid above the piston end engageable with a central portion oi said increase at a lesser rate than the volume for duid I5 member, thereby allowing the inner margin oi annoso said deformable element to move away from said member for opening the valve passage, and spring means to normally hold said member in engagement with said deformable element. said retainer and said member being provided with means to allow passage of fluid through the valve when said member and said deformable element are out of contact.

2. A valve comprising a cup-shaped structure including a base portion provided with an opening therein. a body portion comprising a continuous annular wall. and means forming a shoulder in the wall at a region spaced from the base portion, a resilient flat deformable element positioned within the cup-shaped structure with its periphery at the shoulder and comprising an annular inner margin movable with respect to the periphery away from the base of the cup-shaped structure under deformation of the element and defining a valve opening, a retainer fitting in threaded engagement with said wall for holding the periphery of the deformable element fixedly against the shoulder, a member positioned between the base portion of the cup-shaped structure and the deformable element, said member covering the valve opening and having an annular rib engaging the annular inner margin of said deformable element, said member being movable away from the base portion of the cup-shaped structure so as to remain in contact with the annular inner margin of the deformable element during the above-described movement of said inner margin, an adjustable threaded device having a slot at one end for rotation by a tool and being mounted in the retainer so as to project through the valve opening and having its other end engageable with a central portion of said member, thereby allowing the inner margin of said deformable element to move away from said member for opening the valve passage. and spring means to normally hold said member in engagement with said deformable element, said retainer and said member being provided with means to allow passage of iiuid through the valve when said member and said deformable element are out of contact, said spring means comprising a plurality of resilient fingers disposed in the base portion of the cup-shaped structure to bias said member for normally maintaining the aforesaid engagement with the deformable element, said member being easily movable against the action of the resilient ilngers thereby to insure bodily separation of the member from the fixedly located flat element upon condition of relative pressure rise in said valve opening.

HERMAN C. CUSKIE.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 652,176 Gabel June 19, 1900 1,236,583 Manning Aug. 14, 1917 2,110,691 Aikman Mar. 8, 1938 2,138,513 Rossman Nov. 29, 1938 2,287,842 Tabb June 30, 1942 2,296,732 Oyston Sept. 22, 1942 2,320,697 Binder Jan. 1, 1943 2,329,803 Whisler Sept. 21, 1943 

